https://w3id.org/framester/conceptnet5/data/en/mach_number <https://w3id.org/framester/conceptnet5/schema/RelatedTo> <https://w3id.org/framester/conceptnet5/data/en/transonic> <https://w3id.org/framester/conceptnet5/data/en/hypersonic> <https://w3id.org/framester/conceptnet5/data/en/supersonic> <https://w3id.org/framester/conceptnet5/data/en/subsonic> risorse dalla linked data cloud